Venture

Go into the cupboard (a secret lift) and use the pegs to go up and down floors. When on the top floor, turn the head at the top of the stairs to turn them back to normal. Hold on to the bag before opening the window. Shoot the cannon to get at the box.

turn on the script (output to printer) option and put yellow over thin then turn off the script option. This will give you a printout of the maze.

At the centre, dig in the ground.